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4009

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ID = 37392
       
Country:
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  TWT, Travelling wave tube   SHF/EHF (>3 GHz) 
Identical to 4009

Filament Vf 6.3 Volts / If 1.3 Ampere
Description Low-power traveling wave tube with integral focusing permanent magnet. 2 to 4GHz. 35dB gain at 3GHz, 10mW out. Coaxial RF connectors.
Lead color code:
Heater: brown
Collector: red
Helix: orange
Grid 2: blue
Grid 1: green
Cathode: yellow 
Information source - - Manufacturers Literature   
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